That would need integrating to the tools menu. ( I have not looked into it lately since if you check the Changelog you see there was plenty to do with ubiboot )

Maybe when I get some time I'll look into it.
Possible scenario;
1. Launcher button under tools menu, in case I want to put other things there later.
2. Actual backup menu stuff as an external scirpt.
3. When exit from backupmenu, restore selectionmenu state and back out from the submenu with nice graphics.